Acute rectal bleeding after radiotherapy for cervical cancer is a problem in clinical practice both of traditionnal medicine and modern medicine. Nhi chi thang of traditional medicine with the effect of SpleenTonic, hemostatic, anti-pain is conducting reseach on some haematological indices of rabbits. After 4 weeks, 8 weeks of medication, there is no difference in the increase of body weight between the control group and the treatment group (p 0,05). There is no difference in red blood cells, hemoglobin concentration, hematocrit, leukocyte count, leukocyte formula and the platelet count between the control group and the treatment groups (p 0,05).